James stttrrock



J. STURROCK OIL TRAP FOR ROTARY ENGINES June 15 1926.

Filed Jul 31,

Patented June 15, 1926.

UNITED STATES PENNSYLVANIA, ASSIGNOR T0 INGERSOLL-RAND com- NEw JERSEY, A CORPORATION or NEw JERSEY.

JAMES s'runaoox, or ATHENS,

PANY, oE JERSEY CITY,

PATENT OFFICE.

OIL TRAP FOR ROTARY ENGINES.

Application filed July 31, 1925. Serial No. 47,247.

This invention relates to an rotary engines,

oil trap for but more particularly to a device for preventing the oil or other lubricant from being carried out to atmosphere from the main portion of the motor casing. The objects of the invention are to enable the lubricant to 'be separated from the air in a simple and efiicient manner and permit the air under such pressure the motor casing to escape is created in atmosphere,

while the oil is separated and falls into the lubricant chamber to be used over again in the motor chamber.

The oil or lubricant trap having a tortuous passage therethrough the objects of the iently be built into and is primarily ine in which the rotary b I tates about a horizontal axis.

adapted for Only so much of the moving illustrated as will serve rotary engine are to make the invention clear and ings,

Figure tional view through the rotary motor,

Figure 2 1s a for carrying out invention may conventhe casing of the machine a rotary en power member roparts of a in the draw- 1 is a diagrammatic transverse seccylinder longitudinal sectional elevation partly broken away on the line 2-2 of Figure 3 looking in the arrows showing the oil trap,

direction of the and Figure 3 is a transverse sectional eleva- 2 looking in the engine or has a mam portion or chamthe rotary power member rotates about the horizontal shaft D. The

rotary power member may beof any suitable type and in this instance pisto dicated reciprocating 1n the causing rotation of ns E are incylinders F the main cylinder member by means of which power is transmitted to a suitable driving shaft and the cylinders may othersuitabk motive flui A, lubricant chamber at side of the main 1;)

not shown) r The pressure fluid for operating the pistons be compressed air or G as shown, islewhen iii the 'tion B .of the casing enters walls of the lubricant chamber engine casing and communicates at its bottom with said main portion through the aperture or apertures H. Lubricant, as for instance, lubricating oil Join the oil chamber G and in the bottom of the main portion B of the casing seals the aperture or apertures H and thus oil in the bottom of the casing is carried outwardly for lubricating purposes, due to the action of the power member.

The lubricant chamber G communicates outwardly with the atmosphere through the chamber L and the vent O at the top of the casing. The vented air from the main porthe lubricant chamber through the apertures P in the side of the casing behind the crank disk or eccentric Q. These apertures P are located beneath the lips R on the casing which act as battles and direct the air through the apertures P into the lubricant chamber.

The pressure created by the rotation of the power member in the casing causes a flow of lubricant carrying air out through the apertures P and passages connect therewithto the lubricant chamber and thence to atmosphere and is separated from the air and clings to the G and'drains down into the oil chamber so that the oil is prevented from being carried out to atmosphere.

I claim:

1. In a rotary engine, the combination of a casing, a rotary power member rotatable about a horizontal axis within the main por- C tion of the casing, a lubricant chamber at one side communicating at its bottom with the main portion of the casing, the upper portion of the chamber being vented to atmosphere, the axis of rotation leading from the main portion of the main casing to the lubricant chamber, whereby the lubricant is separated from the air and drains back into thelubricant chamber. 4,

2 In a rotary efl'hii'el, the combination of a casin a rotaf ewter; ii -ember rotatable; cheat a horizontt within the mas and ports in the casing adjacent in its passage the lubricant tion of the casing a lubricant chamber at one side communicating at its bottom with the main portion of the casing, the upper portion of the chamber being Vented to atmosphere, ports in the casing adjacent the axis of rotation leading from the main por tion of the main casing to the lubricant chamber, and lips formine battles on the easing for said ports, whereby the lubricant is separated from the air and drains back into the lubricant chamber.

In testimony whereof I have signed this specification.

JAMES STURROCK. 

